Facts about water

Facts:

• Most famous water sports: sailing, water polo, swimming, fishing, diving.
• Water causes weathering in rocks.
• When water changes from liquid to solid, it expands.
• Like many other chemical substances, water exists in three forms: as liquid, gas and solid.
• About 75% of the human body is made up of water.
• About 1,460 teratonnes (Tt) of water cover 71% of Earth's surface.
• 1.6% of water below ground in aquifers.
• 0.001% in the air as vapor, clouds, and precipitation.
• Saltwater oceans hold 97% of surface water, glaciers.
• Polar ice caps 2.4%.
• Other land surface water such as rivers and lakes 0.025%.
• Winds carry water vapor over land at about 36 Tt per year.
• Over land, evaporation and transpiration 71 Tt per year.
• Precipitation 107 Tt per year over land.
• 97 % of earth’s water is in the oceans.
• Only 3 % of the earth’s water can be used as drinking water.
• 75 % of the world’s fresh water is frozen in the polar ice caps.
• A person can live without food for more than a month, a person can only
  live without water for approximately one week.
• It takes 2 gallons to brush your teeth, 2 to 7 gallons to flush a toilet, and 25 to 50 gallons to take a shower.
• It takes about 1 gallon of water to process a quarter pound of hamburger.
• It takes 2,072 gallons of water to make four new tires.
• One gallon of water is equal to 3.785 liters of water.
• One cubic foot of water is equal to 7.48 gallons of water.
• Water boils at 212 degrees Fahrenheit or 100 degrees Celsius.
• Water freezes at 32 degrees Fahrenheit or 0 degrees Celsius.

The information on this page is taken from njawwa.org and wikipedia.org